Prison-door-locking mechanism.



No. 812,637. PATENTED FEB. 13, :1906.

G- J. CARTER.

PRISUNDOOR LOCKING MECHANISM.

APPLIOATION FILED JULY 27.. 1904..

2 SHEETSSHEET 1,

W aeoyewm 1, fizls alt'arny bio. 812,635. PATENTED 131313.13, 1906.

' G. J. CARTER. Y

PRISON DOOR LOCKING MECHANISM.

APPLICATION FILED JULY 27. 1904.

2 SHEETS-SHEET 2.

Wyn/70R.- G'earye e1 C 'arfer izlr afrlze GEORGE J. CARTER, ()F KENTON, OHlO.

No. erase Specification of Letters Patent.

Patented Feb. 13, 1906.

Application filed July 27,1904. flerial No. 218,361.

ton, Hardin county, Ohio, have invented certain new and useful Improvements in Prison Door-Locking Mechanism, of which the following is a specification that will enable those skilledinthe art to which my invention pertains to make and use the same, reference being had to the accompanying drawings, which. form a 'part thereof.

My invention relates to locking mechanism for a series of cell-doors on a prison-corridor to be controlled and operated from a point outside of the corridor. Its principal ob jects are to enable an operator outside of the corridor through suitable means to so control the individual locks on the respective doors of the series that theyinay be deadlocked against being unlocked from the corridor by keys, or snapl.ocked, so that they may be unlocked from the corridor by keys, or unlocked, so that the doorsmay he opened without the use'ot keys; and my invention consists of such features and combinations of features adapted to effect its objects, as will hereinafter be fully described and claimed.

in the accompanying drawings, which show my invention in form of detail and assemblage of parts now deemed most desirable by me; Figure 1 is a front elevation of the corridonface of a series of cells, partly in section, through the wall separating the cor ridor from the anteroom in which is located the lock-operating mechanism. Fig. 2 is a horizontal section of the same on the line 2 2 of Fig. 1. Figs. 3 and 4 illustrate diiierent I positions of the locking parts at the doors.

Fig. 5 is a face view of the exterior lock-com trolling mechanism.

The cells A of a series are separated from each other by wall-plates a and from the corridor B by a wail-plate a, in which are the door-openings A. adapted to close the openings, are carried in front of the corridor-wall by roller-hangers D mounted in suitable guide-tracks d, located above the door-openings and preferably inclosed in 'a box-casing d, suitably slotted at bottom for the passage of the rollerhangers. At one side of each door-opening is a vertical jamb-box E, having on the side nearest the door slots e for the entrance of latch-hooks. c, rigidly secured upon the ion Grated sliding doors C,

ward edge of the door. This jamb-box extends irorn the floor to the under side oi the box-casing d, with. which it communicates, and in it is a movable locl bar F, having apertures f, adapted to engage the latchhooks when the door'is closed.

Uwing to the narrowness of the jamb-box, the latch-hooks project across and beyondit, but they are guarded against access by castmetal'caps c, secured upon the farther side of thcboX. On the jamb-box is secured a key-lock. 0, having a rotatable barrel 0, to which is attached a gear-segment 0, which engages a series of gear-teeth 0 on the face of the lock-bar F. By means of this device the loclebar may be operated by the he -lock under certain conditions, as will hereinafter be explained. A dead-lock P mayalso be used on the door to lock it independently of the other locking mechanism and hold it locked while the mechanism is operating on the other doors or" the series. The latch p of tois d ad-lock engages a slot in the wall of thejanilrbox, and it lies in a slot p in the loclr har i of such length that the movement of the lock-bar does not a'tl'ect this catch or release it from its hooked engagement withthe wall of the jamb-box.

The upper endy of the lock-bar'projects out of the amb-box and is preferably twisted, as shown, and provided at its extremity with a cross-pin f. This cross-pin is engaged by one arm of a bell-crank lever G, pivoted on a stud-pin g on the front cell-plate o The cross-pin lies in a slot in the bellcrank, which under certain conditions allows of independent movement of the lock-bar F. The other or dependin arm of the bellorank is connected by a cross-pin h to a master-har H, which extends above all of the doors in the series, and through a wall-plate I, which separates the corridor from the exterior or anteroom l. The bell-cranks G of all the doors are similarly connected to the mas tcr-har, so that they are moved uniformly and in unison by it. The end of the masterbar projecting into the antcroom is connected to mechanism K, located in said room and outside of the corridor, adapted to move the master-bar longitudinally and preferably provided with an indicator to register the move ment. The preferred form of this mechanism is illustrated in the drawings, and. it consists of a lever 5, pi. voted at and connected at its upper end by a pin-joint h ever is proyi'ded with a gear-segment J, which vibrates in a guide y" and is engaged by a worm is, mounted on a shaft K, supported in a bracket 2 e projecting end P of the shaft is squared to be engaged by a removable socketcrank 10 A fixed graduated scale or indicator L and a pointer Z, attached to the lever, indicate the degree of movement of the master-bar and bell-cranks. All of this mechanism is preferably inclosed in a secure casin having a door m, provided with handle m and lock m as shown.

, In the operation of my invention the looking mechanism of all the doors may be operated by the actuating mechanism K throu h the master-bar and the vertically-slotted bellcranks, either to dead-lock all the lock-bars F, as shown in Fig.1, or to snap-lock them, as shown in Fig. 3, or to lift and unlock them, as

shown in Fig. 4. In the position of the bellb crank shown in Fig.1 its slot end bears down upon the stud-pin g and dead-locks the lockbar against being raised and unlocked by any means. On the mid position of the belland unlocked by the kejy-lock O. In the extreme position of the be 4 the lower end of the with the pin before the crank shown in Fig. slot has contacted teri'nination. of the movement of the bell-crank, so that its further movement has carried the lock-bar up with it and unlocked the door. With the mechanism outside of the corridor the operator is therefore enabled to set all the locks dead against being unlocked or to set them snap, so that they may be opened individually by keys, or to unlock all of them, except such as may be held by the dead-locks P.

Having thus described my invention, what rigid latcl1-hool(s, a jamb-box aperturedfor the reception of said hooks, a vertically-movable lock-bar located in said jamb-box and having apertures adapted to engage the latchhooks the. upper end of the bar extending out of the amb-box, a cross-pin on the upper end of the bar and a bell-crank lever having one arm vertically slotted to engage said crosspin, a master-bar connected to the other arm of the bell-crank. with akey-lock on the j amb- OX having a rotatable barrel with a toothed segment and a rack on the lock-bar engaged y said segment, substantially as described.

3. The combination of a cell-door having rigid latch-hooks, a jamh-hox apertured for the reception of said hooks, a vertically-movable bar in the jzlll'llhbGX aimrturcd to engagisaid hooks, a dead-lock on 1hr door having a hooked latch adapted to engage an aperture i in the jamb-box and a slot in the lock-barof such length that the movement of the bar will not actuate the hooked latch of the deadlock, substantially as described.

.In testimony whereof I have signed my name to this specification in the presence of I two subscribing witnesses.

GEORGE J. CARTER. Witnesses:

L D. CARTER,

W. P. HENnnnsoN. 

